Over the winter this year I installed a grey water recycling system in my home. All bath and shower water is drained to a holding tank and then plumbed to the toilets. It’s functioning great but the bathrooms have a stale odor. I have tried using chlorine pucks in the holding tank but it doesn’t seem to help.

You have to move the water to polishing tank for the removal of the odor, just create a small water body which is directly exposed to sunlight, put a small aeration pump (one which is used in aquariums) along with diffusers. It would help you to remove odor!

Drig, I would love to know the design of your system and if you have had luck eliminating the odor in the last few months. How does the holding tank fill the toilet tank? What was involved in rerouting the drains from the shower and sink to the tank? My dream is a greywater-flushing system for toilets. Thanks!